I had a go at reworking the broadsides reversible drive & navigation system. The result is fast and doesn't get stuck, but unfortunately it's not really well suited to having a turret and armour fitted.

It is however fast enough that it nearly doesn't need armour, so it should still be useful as a target bot to test turrets against.

On an unrelated note, I'd forgotten how much code was in the turret of my original combat bot. It's probably not going to be fun trying to untangle and modify it to use the XFM inverse trig functions.